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HomeMy WebLinkAboutArea 4 AREA 4 Rational method, 100 year storm Yb calculation . i it " 2.D 4 irsr z OP Asho • s • „ 0 fire f. \ - 4; -1 .---,,, A.,...............„„..4 % i i e st 0110 , 4%, 1 Loc L ......, . r i f El3 N ii"... I -...-mr - # 1 ,,„,-, ....,.., - - - 4 1 CZ) 11 • V i , r ___ • s : a 11. 1 el - r1-101 i ... As T i r 1 • • t _ _ vir 14 1 r w II t gm II it • i II I M_I tki 4 I 1 4 ''' IMI M 41 .1.. 1 _ . • 0 4: I). 1 E g- . 1 l isj amor ill 1-111-11 ...." I r u • • •• toe it Ji ma" ' 1 107..r i., 0 13,. ........ : 4 i \ . 4 e g • . • *II wow. . i ,, i • sis . . ,...... . ow 4 - 4 litt - lig 11:1114 1 I 111 Eilli t ' talc) - .... . 4.„,.......--%/ , „0 ...... ,„ A. ,.....„. .. ,....„.„ , , , II I --- P. el; r..----,,,,, i . wu 1 < i uti i , iiit Ito .. ■ 400 010.1110 1 —....., e , i nit; pi • i.,,,, • ,..., "rvi,„„i*,,,r,.--,:s.-., rt 1 i i , 1 7 44. a ,,, ,..-.,.- 4,/ 0, I ' g l. " ;Pit 1 (.' -0........-4%, ' I .. ((/ r I f 1 q 1401 114 % ' ' ' It t4 ( V-4&-_ _ _ ..... _ _ f \ f i I 41 t ( 1 11 11 f l I s 4 t A\ ** 1'4‘ L IIII "( j ] t ‘ ..",: ,:ki V _ , _____ .. i _ ',6 ( j ,,,,,./ le y i ""r "ii 1 • ' ....A 1::...'. rlf4 i - .....„) . 2 .1 A . i 11, • 41$ i ,., ,,,,! _,,, , , , ..... - ‘s, ‘NAIN0. ) ; iksii.. yea ----,,. ,. s ,n , 'N V,4, I. , AL 41 - 4,‘,.' ' 7,-- '-',..;-= t. , ...- . '. , • , , . ,. :, . ,,/ YiN \ - &-,-"is • 1 I fi lipow. 7 1 , £ I! t \ ``ail . `, 'lt , �._-:; N t ^ fir,,. Li KANWO cox • a komP.1 in * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983 -2003 Advanced Engineering Software (aes) Ver. 8.0 Release Date: 01/01/2003 License ID 1400 Analysis prepared by: Allard Engineering 8253 Sierria Avenue Fontana Ca. 92335 * * * * * * * * * * * * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** * MASTER PLAN OF DRAINAGE * 100 YEAR STORM * * AREA 4 * ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: MASTER24.DAT TIME /DATE OF STUDY: 08:49 10/11/2006 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: -- *TIME - OF- CONCENTRATION MODEL*-- USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = 0.90 *USER- DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* SLOPE OF INTENSITY DURATION CURVE(LOG(I;IN /HR) vs. LOG(Tc;MIN)) = 0.6000 USER SPECIFIED 1-HOUR INTENSITY(INCH /HOUR) = 1.2300 *ANTECEDENT MOISTURE CONDITION (AMC) III ASSUMED FOR RATIONAL METHOD* *USER- DEFINED STREET - SECTIONS FOR COUPLED PIPEFLOW AND STREETFLOW MODEL* HALF- CROWN TO STREET - CROSSFALL: CURB GUTTER- GEOMETRIES: MANNING WIDTH CROSSFALL IN- / OUT-/PARK- HEIGHT WIDTH LIP HIKE FACTOR NO. (FT) (FT) SIDE / SIDE/ WAY (FT) (FT) (FT) (FT) (n) 1 18.0 12.0 0.020/0.020/0.020 0.67 1.50 0.0200 0.125 0.0180 2 22.0 12.0 0.020/0.020/0.020 0.67 1.50 0.0200 0.125 0.0180 GLOBAL STREET FLOW -DEPTH CONSTRAINTS: 1. Relative Flow -Depth = 0.25 FEET as (Maximum Allowable Street Flow Depth) - (Top -of -Curb) 2. (Depth) *(Velocity) Constraint = 10.0 (FT *FT /S) *SIZE PIPE WITH A FLOW CAPACITY GREATER THAN OR EQUAL TO THE UPSTREAM TRIBUTARY PIPE.* *USER- SPECIFIED MINIMUM TOPOGRAPHIC SLOPE ADJUSTMENT NOT SELECTED ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 55.00 TO NODE 65.00 IS CODE = 21 ---------------------------------------------------------------------------- » »> RATIONAL METHOD INITIAL SUBAREA ANALYSIS « «< »USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« INITIAL SUBAREA FLOW - LENGTH(FEET) = 1000.00 ELEVATION DATA: UPSTREAM(FEET) = 1515.00 DOWNSTREAM(FEET) = 1150.00 Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE))* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 10.179 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.566 SUBAREA Tc AND LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) NATURAL POOR COVER "BARREN" B 5.20 0.03 1.00 97 10.18 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.03 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA RUNOFF(CFS) = 16.53 TOTAL AREA(ACRES) = 5.20 PEAK FLOW RATE(CFS) = 16.53 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 65.00 TO NODE 75.00 IS CODE = 53 » »>COMPUTE NATURAL MOUNTAIN CHANNEL FLOW« «< » »>TRAVELTIME THRU SUBAREA« «< ELEVATION DATA: UPSTREAM(FEET) = 1150.00 DOWNSTREAM(FEET) = 980.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 690.00 CHANNEL SLOPE = 0.2464 CHANNEL FLOW THRU SUBAREA(CFS) = 16.53 FLOW VELOCITY(FEET /SEC) = 7.07 (PER LACFCD /RCFC &WCD HYDROLOGY MANUAL) TRAVEL TIME(MIN.) = 1.63 Tc(MIN.) = 11.80 LONGEST FLOWPATH FROM NODE 55.00 TO NODE 75.00 = 1690.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 75.00 TO NODE 75.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 11.80 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.263 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL POOR COVER "BARREN" B 10.30 0.03 1.00 97 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.03 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA(ACRES) = 10.30 SUBAREA RUNOFF(CFS) = 29.94 EFFECTIVE AREA(ACRES) = 15.50 AREA- AVERAGED Fm(INCH /HR) = 0.03 AREA- AVERAGED Fp(INCH /HR) = 0.03 AREA- AVERAGED Ap = 1.00 TOTAL AREA(ACRES) = 15.50 PEAK FLOW RATE(CFS) = 45.05 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 75.00 TO NODE 1200.00 IS CODE = 52 » »>COMPUTE NATURAL VALLEY CHANNEL FLOW« «< » »>TRAVELTIME THRU SUBAREA« «< ELEVATION DATA: UPSTREAM(FEET) = 980.00 DOWNSTREAM(FEET) = 963.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 510.00 CHANNEL SLOPE = 0.0333 CHANNEL FLOW THRU SUBAREA(CFS) = 45.05 FLOW VELOCITY(FEET /SEC) = 6.86 (PER LACFCD /RCFC &WCD HYDROLOGY MANUAL) TRAVEL TIME(MIN.) = 1.24 Tc(MIN.) = 13.04 LONGEST FLOWPATH FROM NODE 55.00 TO NODE 1200.00 = 2200.00 FEET. ********************************************* ** ** ** *********** ** ** ** ** ** * *** FLOW PROCESS FROM NODE 1200.00 TO NODE 1200.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 13.04 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.073 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL POOR COVER "BARREN" B 10.30 0.03 1.00 97 RESIDENTIAL • "5 -7 DWELLINGS /ACRE" B 6.40 0.45 0.50 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.13 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.81 SUBAREA AREA(ACRES) = 16.70 SUBAREA RUNOFF(CFS) = 44.58 EFFECTIVE AREA(ACRES) = 32.20 AREA - AVERAGED Fm(INCH/HR) = 0.07 - AREA - AVERAGED Fp(INCH /HR) = 0.08 AREA- AVERAGED Ap = 0.90 TOTAL AREA(ACRES) = 32.20 PEAK FLOW RATE(CFS) = 86.98 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 1200.00 TO NODE 60.00 IS CODE = 62 » »>COMPUTE STREET FLOW TRAVEL TIME THRU SUBAREA« «< » »>( STREET TABLE SECTION # 2 USED) « «< UPSTREAM ELEVATION(FEET) = 963.00 DOWNSTREAM ELEVATION(FEET) = 957.00 STREET LENGTH(FEET) = 1350.00 CURB HEIGHT(INCHES) = 8.0 STREET HALFWIDTH(FEET) = 22.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK(FEET) = 12.00 INSIDE STREET CROSSFALL(DECIMAL) = 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) = 0.020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 STREET PARKWAY CROSSFALL(DECIMAL) = 0.020 Manning's FRICTION FACTOR for Streetflow Section(curb -to -curb) = 0.0180 Manning's FRICTION FACTOR for Back -of -Walk Flow Section = 0.0200 * *TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 110.62 ** *STREET FLOWING FULL * ** STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: STREET FLOW DEPTH(FEET) = 0.95 HALFSTREET FLOOD WIDTH(FEET) = 35.92 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.58 PRODUCT OF DEPTH &VELOCITY(FT *FT /SEC.) = 3.38 STREET FLOW TRAVEL TIME(MIN.) = 6.29 Tc(MIN.) = 19.33 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 2.427 SUBAREA LOSS RATE DATA(AMC III): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL POOR COVER "BARREN" B 10.40 0.03 1.00 97 RESIDENTIAL "5 -7 DWELLINGS /ACRE" B 12.50 0.45 0.50 76 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.19 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.73 SUBAREA AREA(ACRES) = 22.90 SUBAREA RUNOFF(CFS) = 47.16 EFFECTIVE AREA(ACRES) = 55.10 AREA- AVERAGED Fm(INCH /HR) = 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.12 AREA- AVERAGED Ap = 0.83 TOTAL AREA(ACRES) = 55.10 PEAK FLOW RATE(CFS) = 115.41 END OF SUBAREA STREET FLOW HYDRAULICS: DEPTH(FEET) = 0.96 HALFSTREET FLOOD WIDTH(FEET) = 36.65 FLOW VELOCITY(FEET /SEC.) = 3.61 DEPTH *VELOCITY(FT *FT /SEC.) = 3.46 *NOTE: INITIAL SUBAREA NOMOGRAPH WITH SUBAREA PARAMETERS, AND L = 1350.0 FT WITH ELEVATION -DROP = 6.0 FT, IS 45.4 CFS, WHICH EXCEEDS THE TOP -OF -CURB STREET CAPACITY AT NODE 60.00 LONGEST FLOWPATH FROM NODE 55.00 TO NODE 60.00 = 3550.00 FEET. END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 55.10 TC(MIN.) = 19.33 EFFECTIVE AREA(ACRES) = 55.10 AREA - AVERAGED Fm(INCH/HR)= 0.10 AREA- AVERAGED Fp(INCH /HR) = 0.12 AREA- AVERAGED Ap = 0.83 PEAK FLOW RATE(CFS) = 115.41 END OF RATIONAL METHOD ANALYSIS ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS (C) Copyright 1989 -2003 Advanced Engineering Software (aes) Ver. 9.0 Release Date: 01/01/2003 License ID 1400 Analysis prepared by: Allard Engineering 8253 Sierria Avenue Fontana Ca. 92335 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** Problem Descriptions: MASTER PLAN OF DRAINAGE AREA 4 YB CALCULATION * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS FOR AMC II: TOTAL 24 -HOUR DURATION RAINFALL DEPTH = 8.00 (inches) SOIL -COVER AREA PERCENT OF SCS CURVE LOSS RATE TYPE (Acres) PERVIOUS AREA NUMBER Fp(in. /hr.) YIELD 1 18.90 50.00 56. 0.748 0.666 2 36.20 100.00 86. 0.272 0.791 TOTAL AREA (Acres) = 55.10 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.307 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.252 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS (C) Copyright 1989 -2003 Advanced Engineering Software (aes) Ver. 9.0 Release Date: 01/01/2003 License ID 1400 Analysis prepared by: Allard Engineering 8253 Sierria Avenue Fontana Ca. 92335 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** Problem Descriptions: Problem Descriptions: MASTER PLAN OF DRAINAGE AREA 4 YB CALCULATION * ** NON - HOMOGENEOUS WATERSHED AREA- AVERAGED LOSS RATE (Fm) AND LOW LOSS FRACTION ESTIMATIONS FOR AMC III: TOTAL 24 -HOUR DURATION RAINFALL DEPTH = 8.00 (inches) SOIL -COVER AREA PERCENT OF SCS CURVE LOSS RATE TYPE (Acres) PERVIOUS AREA NUMBER Fp(in. /hr.) YIELD 1 18.90 50.00 76.( 56.) 0.452 0.807 2 36.20 100.00 97.( 86.) 0.036 0.955 TOTAL AREA (Acres) = 55.10 AREA- AVERAGED LOSS RATE, Fm (in. /hr.) = 0.101 AREA- AVERAGED LOW LOSS FRACTION, Y = 0.096